WPI EVOM Manual - EVOM Manual Features; EVOM Manual Benefits

4 World Precision Instruments
a low AC current that avoids electrode metal deposits and adverse eects on tissues
which can otherwise be caused by higher DC currents. The EVOM™ Manual uses
low current and voltages and is designed for non-destructive testing for epithelial
monolayer conuence in cell cultures. In addition, resistance readings are unaected
by membrane capacitance or membrane voltage. The accuracy and repeatability of the
EVOM™ Manual system makes this instrument ideal for permeability, PD and other
detailed membrane studies.
EVOM™ Manual Features
• Low noise design oers greater resolution and accuracy
• Automatic 20X sample averaging improves accuracy and stability
• Adjustable xed measurement currents (2, 4 or 10 μA)
• Resistance auto ranging from 1 Ω to 100,000 Ω or with three xed current ranges
• Reliable low current, low voltage design prevents metal ion transport
• Fast resistance stabilization on low levels under 200 Ω with resolution to 0.1 Ω
• Ergonomic tilt stand for low glare operation
• Graphical display of popular plates (6, 12, 24, 96) for trend analysis
• The display shows the most recent set of parameters
• Automatic plate indexing operation with or without control well subtraction for
resistance and potential dierence (PD) measurements
• Continuous data logging via USB (PC, Mac, Linux)
• Saves date stamped data to a spreadsheet readable le on a USB drive
• Upgradable rmware
EVOM™ Manual Benets
Eliminates errors and reduces experimental processing time
Auto data logging eliminates the need to track data by hand
The small footprint allows more bench space
Easy calibration and verication
Footswitch for hands-free recording
Prevent data loss with auto save and data recovery when battery
is low
TEER is easily computed by applying a unit area formula to the
resistance